MC74HCT244ADG

Overview

Category: Integrated Circuit (IC)

Use: Logic Level Shifter

Characteristics: - High-Speed CMOS Technology - 3-State Outputs - Wide Operating Voltage Range: 2V to 6V - High Noise Immunity - Balanced Propagation Delays - Low Power Consumption

Package: SOIC-20

Essence: The MC74HCT244ADG is a logic level shifter IC that allows bidirectional voltage level translation between different logic levels. It is commonly used in digital systems where signals need to be shifted from one voltage level to another.

Packaging/Quantity: The MC74HCT244ADG is typically sold in reels or tubes, with each reel/tube containing 250 units.

Specifications

• Supply Voltage Range: 2V to 6V
• Input Voltage Range: GND to VCC
• Output Voltage Range: GND to VCC
• Maximum Input Current: ±20mA
• Maximum Output Current: ±25mA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MC74HCT244ADG has a total of 20 pins, which are arranged as follows:

__ __ A1 |1 \__/ 20| VCC A2 |2 19| B1 A3 |3 18| B2 A4 |4 17| B3 A5 |5 16| B4 A6 |6 15| B5 A7 |7 14| B6 A8 |8 13| B7 GND |9 12| B8 OE |10 11| GND ‾‾ ‾‾

Functional Features

• Bidirectional voltage level shifting: The MC74HCT244ADG can shift logic signals from one voltage level to another, allowing seamless communication between different parts of a digital system.
• 3-State Outputs: The IC has 3-state outputs, which means they can be in high impedance state when not actively driving the output.
• High-Speed CMOS Technology: The use of high-speed CMOS technology enables fast switching times and efficient operation.
• Wide Operating Voltage Range: The IC can operate within a wide voltage range of 2V to 6V, making it compatible with various digital systems.
• High Noise Immunity: The MC74HCT244ADG has high noise immunity, ensuring reliable signal transmission even in noisy environments.
• Balanced Propagation Delays: The IC maintains balanced propagation delays for all inputs and outputs, ensuring accurate timing of signals.

Advantages and Disadvantages

Advantages: - Efficient voltage level shifting capability - High-speed operation - Wide operating voltage range - Low power consumption - Reliable signal transmission in noisy environments

Disadvantages: - Limited number of input/output channels (8 channels)

Working Principles

The MC74HCT244ADG operates based on the principles of CMOS logic. It utilizes a combination of MOSFET transistors to perform voltage level shifting. When an input signal is received, the IC determines the logic level and shifts it to the corresponding voltage level on the output side. The 3-state outputs allow the IC to enter a high impedance state when not actively driving the output, preventing any interference with other components.

Detailed Application Field Plans

The MC74HCT244ADG finds applications in various digital systems where voltage level translation is required. Some common application areas include:

1. Microcontrollers and microprocessors
2. Communication systems
3. Data acquisition systems
4. Industrial automation
5. Robotics
6. Automotive electronics

Detailed and Complete Alternative Models

• SN74HCT244N by Texas Instruments
• CD74HCT244E by Texas Instruments
• 74HCT244 by NXP Semiconductors
• 74HC244 by ON Semiconductor
• MC74HCT244AN by ON Semiconductor

These alternative models offer similar functionality and can be used as replacements for the MC74HCT244ADG in various applications.

Word count: 515 words